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Thallium removing system for water body and application of thallium removing system

A water body and system technology, applied in water pollutants, water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as crop yield reduction

Inactive Publication Date: 2018-11-02
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, water or soil polluted by thallium can also lead to crop yield reduction

Method used

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  • Thallium removing system for water body and application of thallium removing system
  • Thallium removing system for water body and application of thallium removing system
  • Thallium removing system for water body and application of thallium removing system

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with examples. The present embodiment has studied ferrous (Fe 2+ ) synergistically with persulfate (S 2 o 8 2- ) to remove the efficiency and mechanism of monovalent thallium in wastewater, respectively investigated the Fe 2+ -S 2 o 8 2- system in different S 2 o 8 2- Dosage, Fe 2+ with S 2 o 8 2- Thallium removal efficiency based on factors such as molar ratio, reaction pH, coagulation pH, ionic strength, coexisting organic matter, and initial thallium concentration.

[0031] 1. Experimental instruments and reagents

[0032]Instruments: HJ-6B digital display constant temperature speed measurement magnetic heating stirrer, electronic balance, PHB-3 pen-type pH meter, TAS-990 flame atomic absorption spectrophotometer.

[0033] Reagents: thallus nitrate, concentrated nitric acid, sodium hydroxide, sodium persulfate, ferrous sulfate, sodium nitrate, magnesium sulfate, calcium chlo...

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Abstract

The invention discloses a thallium removing system for a water body. The thallium removing system is prepared from a ferrous ion reagent and a peroxydisulfate reagent, wherein the ferrous ion reagentis a substance which can ionize out ferrous ions in the water body; the peroxydisulfate reagent is a substance which can ionize out peroxydisulfate in the water body; ferrous ions fed into the water body are synthesized with the peroxydisulfate to remove monovalent thallium in the water body through iron carbonyl colloid adsorption and oxidative precipitation of thallium. The thallium removing mechanism of the thallium removing system mainly lies in thallium adsorption and thallium oxidative precipitation by iron carbonyl colloid; the ferrous ion reagent and the peroxydisulfate reagent form aFe<2+>-S2O8<2-> system in the water body; the monovalent thallium in the water body is oxidized into trivalent thallium by the peroxydisulfate, and the trivalent thallium is precipitated by generatinghydroxide. The ferrous ions are oxidized into ferric ions (Fe<3+>) at normal temperature; the ferric ions have a certain flocculation effect and can accelerate the precipitation of the thallium. Thethallium removing system disclosed by the invention overcomes the technical defects of removing the thallium by an existing chemical method, has excellent thallium removing efficiency and can be widely applied to treatment of various kinds of thallium-containing wastewater.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to the treatment of thallium-containing sewage, in particular to a water body thallium removal system and its application in thallium pollution control projects. Background technique [0002] In recent years, the pollution of heavy metals has become increasingly serious. As a toxic and harmful heavy metal, thallium (Tl) has increasingly obvious impact on the ecological environment. Thallium mainly exists in the environment in two forms, Tl(I) and Tl(III), which are unevenly distributed in natural soil, but due to human industrial activities and mining operations, the enrichment process of thallium contains thallium Waste water enters the natural world, and thallium has caused great harm to human life, production and the natural environment. [0003] Thallium pollution of water bodies has had an impact on the ecological environment and the health of the people. Thallium-conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F101/20
CPCC02F1/5236C02F1/5245C02F2101/20
Inventor 龙建友李珂珂李伙生肖唐付张高生
Owner GUANGZHOU UNIVERSITY
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